Bolt-operating device



(No Model.)

L. G. MOULTON.

BOLT OPERATING DEVICE- No. 327,010. Patented Sept. 29, 1885.

WITNESSES. INVENTDR.

PETERS. Pmm-uma m hur. Washington. D. c.

UNITED STATES PATENT OFFICE.

LORENZO G. MOULTON, OF BOSTON, MASSACHUSETTS.

BOLT-OPERATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 327,010, datedSeptember 29, 1885.

Application filed August 14, 1885.

To all whom it may concern.-

Be it known that I, LORENZO G. MoULToN, of Boston, in the county ofSuffolk and State of Massachusetts, have invented a new and usefulImprovement in Looking Mechanism for Cell-Doors, of which the following,taken in connection with the accompanying drawings, is a specification.

The object of my invention is to provide a secure and quick-workingmethod for fastening and unfastening a series of doors, as thecell-doors in a jail. I attain this object by the mechanism illustratedin the accompanying drawings, in which-- Figure l is a perspective viewof my invention. Fig. 2 is a cross section showing my invention asapplied to the upper part of a cell-door. Fig. 3 is a plan view of thesame. Figs. 4 and 5 show a modification of the looking device.

In the drawings, A represents a slot or opening in the ordinarycast-iron lintel, F, which supports the masonry over the dooropenings.

Bis a movable piece, one end of which is fastened to a commonlooking-bar, G, which passes along over and in front of the celldoors,while the other end passes down through the slot A in front of the topof the door H when shut.

O is a box or cover in which the movable piece B works.

D is a rib which reaches part way across the box 0 and projects downfrom its top nearly to the movable piece B when in position. This box orcover 0 is open in front,

(No model.)

so as to allow the movable piece B to be freely inserted, and its endpasses down through the slot A, when it is moved by the looking-bar, infront of the door and under the rib D, which prevents it from rising,While the edge of the slot A in the lintel enables the piece B to resistany pressure from Within.

In a modification of my locking mechanism, as shown in Figs. t and 5,the box 0 is provided with a second rib, E, which reaches quite acrossthe box, about midway between the rib D and the locking-bar G. The rib Ehas an opening in its under side, through which the piece B is inserted,which serves also as a fulcrum for the piece B, one end of which isfastened to the lockingbarin such manner as to allow it to swing freelyas the bar is moved, while the oth r end swings in the slot A, which inthis case is cut in a circular form instead of being straight, as in theother described style.

Having thus described my invention, what I desire to secure by LettersPatent is The lintel provided with the slot A, the movable piece B, thebox or cover 0, provided with the rib D, in combination with thelocking-bar G, substantially as described, and for the purpose setforth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 11th day of August, A. D.1885.

LORENZO G. MOULTON.

\Vitnesses:

FRANK G. PARKER, GALEN GOFFIN.

